RulesMLB
2.03 The Bases
First, second and third bases shall be marked by white canvas or rubber-covered bags, securely attached to the ground as indicated in Diagram 2. The first and third base bags shall be entirely within the infield. The second base bag shall be centered on second base. The bags shall be 15 inches square, not less than three nor more than…
RulesMLB
2.02 Home Base
Home base shall be marked by a five-sided slab of whitened rubber. It shall be a 17-inch square with two of the corners removed so that one edge is 17 inches long, two adjacent sides are 8ó inches and the remaining two sides are 12 inches and set at an angle to make a point….